Does BG1 (not EE) come with any mods already installed in the GOG version?

For example, I'm looking through the conservative modders guide and it recommends the widescreen mod? Is that already installed? What about Baldurdash or Dudleyfixes?

None of the mods are included in the GoG version. You have to download them and install them yourself.

I think there's the mod with additional music added though, so it's not 100% without mods.